PERUGIA, Italy -- Day Two of Amanda Knox's testimony on the witness stand made a bizarre turn into Seattle's University District late Saturday, as lawyers sparred over the exact nature of a party Knox was cited for two summers ago.

Knox, 21, of Arbor Heights, is on trial for murder and sexual assault of her British roommate, Meredith Kercher. Prosecutors argue Knox, her ex-boyfriend Raffaele Sollecito and Ivory Coast national Rudy Guede strangled, stabbed and suffocated Kercher in the Perugia apartment she and Knox shared Nov. 1, 2007. Guede was tried, convicted and sentenced to 30 years in prison for his role in a fast-track trial last October.

The party in Seattle became pertinent Saturday because it was Knox's only prior run-in with police. In the course of questioning, Knox was asked to describe what happened. Both Knox and Andrew Seliber, a college buddy who flew to Perugia to appear Saturday as a character witness, told of a very ordinary college party with a band that got a little loud. Neighbors called police. Police arrived, Knox went out to talk with them, took responsibility and was given a minor disturbance citation with a fine of a few hundred dollars, which her friends pitched in to pay.

But apparently there are vastly varying stories over what really happened that night.

The prosecutor cited a British newspaper story that described a raucous and out-of-control scene with rocks being hurled onto cars. Knox's lawyer, Carlo Dalla Vedova, cited a Seattle law enforcement official who said the matter was resolved quickly as a minor administrative issue. The tabloid reported "just gossip," Dalla Vedova said. And the lawyer for Kercher's family, Francesco Maresca, weighed in with reference to an FBI report that implied the truth was somewhere in between: that rocks were thrown but it was resolved with a minor citation.

And what does any of it have to do with the death of Meredith Kercher?

The prosecution's reference to a Daily Mail article about the party appeared aimed at showing jurors a glimpse of Knox's wild side -- and implying that she sometimes didn't tell the whole truth.

Though Knox gave a fairly consistent story both days, her testimony is in direct conflict with that of other witnesses. An Albanian immigrant said he saw her near the scene of the crime the night of the murder. "Tutto falso," she said -- "all false" in Italian. So did a homeless man. "Impossibile," she said.

Police say she was treated firmly, but fairly. She claims she was browbeaten and pressured until she could come up with a scenario for the crime, which she did, naming an innocent man, Congolese pub owner Patrick Lumumba. Knox said she was confused and scared by intense police pressure, began having flashbacks and eventually had difficulty telling if her recollections were real. Lumumba spent two weeks in prison and is now suing her for slander.

Her roommates and Kercher's friends say she was emotionless and acting strangely after the murder. Knox herself said she was shocked and cried privately, while seeking consolation in her boyfriend.

For the last five months, prosecutors have built their case against Knox, including multiple character, police and forensic DNA witnesses. After her two days of testimony, the list of contradictions between the defense and prosecution cases is long. The eight-member jury, made up of six laypersons and two judges, will have to weigh all the elements and make a decision next fall.

Amanda's father, Curt Knox, said after the hearing that he felt confident.

"She had nothing to hide and told the truth," he said. "She has done nothing wrong and I'm hoping we get a not-guilty verdict."

In the courtroom on Saturday, the tension between Knox and Italian prosecutor Giuliano Mignini was palpable -- she at times defensive, he sometimes getting flustered. But she maintained her composure, speaking Italian the entire time, even under tough questioning. One of the few awkward moments was when the Kercher family lawyer, Francesco Maresca, asked about comments she made to Kercher's friends, when they had said they hoped the Leeds University student had died quickly and painlessly.

"Why did you say you thought she died a slow death?" asked Maresca.

"I heard that her throat had been slit and from what I have seen on 'CSI,' it is not something fast or easy. Blegh," she said, making a gagging gesture. "It is disgusting. The brutality, to die that way."

Knox also gave some key first-person details about the crime scene the morning she arrived to take a shower at the house she shared with Kercher. She told the judge that she had not seen any blood in the bathroom the day before Kercher's death -- only the morning after. Forensic police have testified about finding mixed DNA samples of Kercher and Knox's blood on the bidet, sink and a Q-tips box. Knox testified that she had cleaned her ears with a Q-tip that morning, and had recent piercings, one of which was infected.

The judge also asked whether Sollecito's apartment had smelled of bleach (no) and what she was wearing the morning Kercher's body was found. Sollecito's attorney, Giulia Bongiorno also questioned Knox about being led in and out of the crime scene, which defense lawyers maintain was inadvertently contaminated. She also asked Knox to describe how she hopped and scooted on the mat from the bathroom to her bedroom to get a towel. Forensic police say a bloody half footprint found at the scene is compatible with Sollecito's. Knox said she saw some blood and thought it strange, but didn't think it was a footprint. She figured one of her roommates had been having menstrual issues.

Perhaps one of the day's most poignant moments was the exchange of smiles between Knox and her best friend from college, Andrew Seliber, who flew from Seattle to testify on her behalf. The two hadn't seen each other since August 2007 and when he walked into the courtroom, Knox was clearly touched by his presence.

Seliber, 22, told jurors how he'd met Knox at the University of Washington, where they lived in the same dorm. She studied hard and worked three jobs the year before leaving for Italy, but she also liked to rock climb, play music and party occasionally, like most other college kids. Once she left for Italy, she raved about her roommates and posted enthusiastic reports on Facebook and in emails back home.

"She told me her roommates were great, that they got along well and she liked them very much," said Seliber, a psychology major. "She was having the best time of her life."